70439153 ÷ 688 
The aim is to understand the frequency of 688 in 70439153.

Step 1:
When dividing 7 by 688, we get 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Append the next digit (0) from the dividend to 7 and continue with: 70 / 688

Advancing to step 2:
If we divide 70 by 688, we get 0 and a remainder of 70.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 70, we get 70.
Bring next digit (4) of the dividend behind the 70 and repeat the process: 704 / 688

Advancing to step 3:
704 divided by 688 is 1 with a remainder of 16.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 688 from 704, we get 16.
Fetch the next digit (3) from the dividend, attach it to 16 and continue: 163 / 688

Advancing to step 4:
If we divide 163 by 688, we get 0 and a remainder of 163.
Use 0 as the next digit of our solution. 
Result so far: 10.0
The remainder is 163 after subtracting 0 from 163.
Include the next digit (9) from the dividend after 163, then repeat: 1639 / 688

Let's proceed to step 5:
If we divide 1639 by 688, we get 2 and a remainder of 263.
The next digit of our result is 2. 
Result so far: 102.0
Subtract 1376 from 1639 to get 263.
Take the next digit (1) from the dividend and append it to 263, then repeat: 2631 / 688

Moving on to step 6:
688 can be fit into 2631 3 times, resulting in a remainder of 567.
Put 3 as the next digit of the answer. 
Result so far: 1023.0
Deduct 2064 from 2631 and we're left with 567.
Include the next digit (5) from the dividend after 567, then repeat: 5675 / 688

Advancing to step 7:
When dividing 5675 by 688, we get 8 with a remainder of 171.
Write down 8 as next digit of the result. 
Result so far: 10238.0
The remainder is 171 after subtracting 5504 from 5675.
Include the next digit (3) from the dividend after 171, then repeat: 1713 / 688

On to step 8:
When dividing 1713 by 688, we get 2 with a remainder of 337.
Use 2 as the next digit of our solution. 
Result so far: 102382.0
Subtract 1376 from 1713 to get 337.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3370, and continue the process.

Step 9:
If we divide 3370 by 688, we get 4 and a remainder of 618.
The next digit of our result is 4. 
Result so far: 102382.4
If we subtract 2752 from 3370, we get 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

Moving on to step 10:
688 can be fit into 6180 8 times, resulting in a remainder of 676.
Use 8 as the next digit of our solution. 
Result so far: 102382.48
The remainder is 676 after subtracting 5504 from 6180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6760, and continue the process.

On to step 11:
688 can be fit into 6760 9 times, resulting in a remainder of 568.
Write down 9 as next digit of the result. 
Result so far: 102382.489
If we subtract 6192 from 6760, we get 568.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5680, and continue the process.

On to step 12:
5680 divided by 688 is 8 with a remainder of 176.
Record the quotient 8 as the next digit in the result. 
Result so far: 102382.4898
The remainder is 176 after subtracting 5504 from 5680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Let's proceed to step 13:
If we divide 1760 by 688, we get 2 and a remainder of 384.
The number 2 becomes the next digit in our result. 
Result so far: 102382.48982
Subtract 1376 from 1760 to get 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Moving on to step 14:
If we divide 3840 by 688, we get 5 and a remainder of 400.
The number 5 becomes the next digit in our result. 
Result so far: 102382.489825
Subtract 3440 from 3840 to get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Going ahead to step 15:
4000 divided by 688 is 5 with a remainder of 560.
Use 5 as the next digit of our solution. 
Result so far: 102382.4898255
If we subtract 3440 from 4000, we get 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

After the division, we end up with 102382.4898255 and a remainder of 5.6e-06.